I don't want to say toddlers are completely irrational little creatures ... but toddlers are completely irrational little creatures! For first-time parents, learning how to survive in The Land Logic Forgot can be quite a challenge -- you never know what's going to flip your kid's switch from the "cute and funny" setting to "cyclone of sobs, screams, and flailing limbs." At first, toddler tantrums seem to make no sense at all: Really? He's throwing a fit over the color of his pants?! Until, that is, you learn to let go of that whole "making sense" thing and just roll with whatever seemingly benign circumstance happens to turn your kid into a raging lunatic on any given day. Read on for some of the most common -- and most unexpected -- toddler tantrum triggers we've seen.